Mirum Pharmaceuticals, Inc.
DE ˙ DB ˙ US6047491013
77,12 € ↑0,96 (1,26%)
2026-06-05
DEL PRIS
SecurityDE:08D / Mirum Pharmaceuticals, Inc.
InstitutionRhumbline Advisers
Latest Disclosed Ownership51,942 shares
Latest Disclosed Value $ 4,798,384
Rhumbline Advisers reports 2.30% increase in ownership of 08D / Mirum Pharmaceuticals, Inc.

On May 12, 2026 - Rhumbline Advisers filed a 13F-HR form disclosing ownership of 51,942 shares of Mirum Pharmaceuticals, Inc. (DE:08D) valued at $3,895,650 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 50,774 shares of Mirum Pharmaceuticals, Inc.. This represents a change in shares of 2.30% during the quarter. The current value of the position is $4,005,767 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-12 2026-03-31 13F MIRUM PHARMACEUTICALS I COM 604749101 51,942 1,168 2.30 4,798 19.65 0.0041
2026-02-13 2025-12-31 13F MIRUM PHARMACEUTICALS I COM 604749101 50,774 -8,291 -14.04 4,011 -7.39 0.0032
2025-11-06 2025-09-30 13F MIRUM PHARMACEUTICALS I COM 604749101 59,065 -5,528 -8.56 4,330 31.73 0.0035
2025-08-12 2025-06-30 13F MIRUM PHARMACEUTICALS I COM 604749101 64,593 9,159 16.52 3,287 31.64 0.0028
2025-05-29 2025-03-31 13F/A-1 MIRUM PHARMACEUTICALS I COM 604749101 55,434 2,321 4.37 2,497 13.71 0.0023
2025-04-08 2025-03-31 13F MIRUM PHARMACEUTICALS I COM 604749101 55,434 2,321 2,497 0.0023
2025-05-29 2024-12-31 13F/A-1 MIRUM PHARMACEUTICALS I COM 604749101 53,113 1,236 2.38 2,196 8.55 0.0020
2025-01-30 2024-12-31 13F MIRUM PHARMACEUTICALS I COM 604749101 53,113 1,236 2,196 0.0020
2024-11-12 2024-09-30 13F MIRUM PHARMACEUTICALS I COM 604749101 51,877 -1,039 -1.96 2,023 11.83 0.0018
2024-08-01 2024-06-30 13F MIRUM PHARMACEUTICALS I COM 604749101 52,916 17,279 48.49 1,809 102.12 0.0017
2024-05-09 2024-03-31 13F MIRUM PHARMACEUTICALS I COM 604749101 35,637 -187 -0.52 895 -15.33 0.0009
2024-02-08 2023-12-31 13F MIRUM PHARMACEUTICALS I COM 604749101 35,824 -320 -0.89 1,058 -7.44 0.0011
2023-11-09 2023-09-30 13F MIRUM PHARMACEUTICALS I COM 604749101 36,144 1,867 5.45 1,142 28.89 0.0013
2023-08-08 2023-06-30 13F MIRUM PHARMACEUTICALS I COM 604749101 34,277 10,201 42.37 887 0.0010
2023-05-11 2023-03-31 13F MIRUM PHARMACEUTICALS I COM 604749101 24,076 1,261 5.53 1 -100.00 0.0007
2023-02-14 2022-12-31 13F MIRUM PHARMACEUTICALS I COM 604749101 22,815 724 3.28 445 -4.09 0.0006
2022-11-10 2022-09-30 13F MIRUM PHARMACEUTICALS I COM 604749101 22,091 3,747 20.43 464 29.97 0.0007
2022-08-11 2022-06-30 13F MIRUM PHARMACEUTICALS I COM 604749101 18,344 18,344 357 0.0005
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.